This seems like a very dangerous thing to be messing with though. Much like the hadron collider. Wouldn't it make sense to do these experiments or ehatever in space? Even Doc Oc couldn't control it.
Taking ITER for example, it's being built in France where they have very strong nuclear safety rules. There's a section on safety here.
In ITER, a runaway reaction is impossible
Can a Fukushima-type accident happen at ITER? Absolutely not. The fundamental differences in the physics and technology used in fusion reactors make a fission-type nuclear meltdown or a runaway reaction impossible. The fusion process is inherently safe.
In a fusion reactor, there will only be a limited amount of fuel (less than four grams) at any given moment. The reaction relies on a continuous input of fuel; if there is any perturbation in this process and the reaction ceases immediately. Even in the event of the total loss of the cooling function, ITER's confinement barriers would not be affected. The temperatures of the vacuum vessel that provides the first confinement barrier would under no circumstances reach the melting temperatures of the materials.
etc.